CA2026174C - Surface treatment apparatus - Google Patents
Surface treatment apparatus Download PDFInfo
- Publication number
- CA2026174C CA2026174C CA002026174A CA2026174A CA2026174C CA 2026174 C CA2026174 C CA 2026174C CA 002026174 A CA002026174 A CA 002026174A CA 2026174 A CA2026174 A CA 2026174A CA 2026174 C CA2026174 C CA 2026174C
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- CA
- Canada
- Prior art keywords
- jig
- pair
- rotating wheels
- hanger
- ropes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
- B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
- B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
- B65G49/0436—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath
- B65G49/044—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit
- B65G49/045—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed
- B65G49/0454—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed by means of containers -or workpieces- carriers
- B65G49/0459—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance from bath to bath along a continuous circuit the circuit being fixed by means of containers -or workpieces- carriers movement in a vertical direction is caused by self-contained means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating Apparatus (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
A surface treatment apparatus having a treatment bath for immersing and treating a workpiece therein with the workpiece being put into and taken out of said treatment bath by the lifting and lowering thereof and with the workpiece being rotated about a horizontal axial line while in the bath. A jig is provided for holding the workpiece having a pair of suspending points at each end thereof in symmetrical relationship about a horizontal axial line. Ropes suspend the jig with each one connected to one of the suspending points at each end of said jig. In a first embodiment, a pair of hoisting apparatuses are provided with upper ends of the ropes connected to suspending points on one side at both ends of the jig being connected to one of the hoisting apparatuses and upper ends of the ropes connected to suspending points on the other side at both ends of the jig being connected to the other of the hoisting apparatuses. In a second embodiment, a pair of jig-rotating wheels are fixed on the same horizontal axial line at both ends of the jig. The ropes for suspending the jig are respectively wound around the jig-rotating wheels. A pair of hoisting apparatuses are provided with one end of each of the ropes being connected to one of the hoisting apparatuses and the other end of each of the ropes being connected to the other of the hoisting apparatuses. In a third embodiment, the four ropes are paired at each end of the jig with lower ends of each pair being fixed to each of the jig-rotating wheels by winding therearound in the opposite directions to each other. The four ropes are divided into two sets having respectively two ropes of the same winding direction and upper ends of two ropes of one set are connected to one of the hoisting apparatuses and upper ends of two ropes of the other set are connected to the other of the hoisting apparatuses. In the fourth embodiment, instead of the jig-rotating wheels, a pair of shaft extension portions are projectingly provided on the same horizontal axial line at both ends of the jig and a pair of bearing members are externally inserted onto both shaft portions and rotatably support the jig with a pair of ropes suspending the jig having a lower end of each of the ropes being respectively fixed to one of the bearing members and an upper end of each of the ropes being connected to at least one hoisting apparatus, whereby the jig can be lifted or lowered by the rotation of the at least one hoisting apparatus in one direction or in the opposite direction. A pair of guide frames for guiding the jig in engagement with the shaft extension portions are vertically provided in the treatment bath.
A pinion is provided on at least one of the shaft extension.
portions and a rack for engaging with the pinion is provided in at least one of the guide frames which are engaged with the shaft extension portions.
A pinion is provided on at least one of the shaft extension.
portions and a rack for engaging with the pinion is provided in at least one of the guide frames which are engaged with the shaft extension portions.
Description
SURFACE TREATMENT APPARATUS
BACKGROUND OF THE IN'~E TION
This invention relates to an apparatus for surface treating workpieces :>uch as vehicle bodies by immersing them into a treatment bath far performing a surface treatment such as chemical treatment, e~lectrodeposition or the like.
An apparatus of this type is disclosed in Japanese Published Unexamined Patent Application No. 229167/1988. The apparatus includes a jig for holding a vehicle body provided at a treatment station where a treatment bath is placed. The jig can be lifted and lowered and can be pivoted or rotated about a horizontal axial line which extends in the direction of the length of the vehicle body. The vehicle body is transported to the treatment station by a hanger conveyor and is received by the jig. The vehicle body is put into and taken out of the treatment bath by lowering and lifting the jig and is rotated between a horizontal posture and a "lie-on~-side" posture. In this apparatus, by putting the vehicle body into the treatment bath in the "lie-on-side"
posture, the resistance at the time of putting it into and taking it out of the treatment bath is reduced, and the vehicle body is cleared of air traps>ed inside the vehicle body by inverting it after it has been put: into the treatment bath.
In this kind of apparatus, the j ig is rotatably supported between a pair of lifting frames which are provided on both sides of the treatment bath. . The j ig is arranged to be lifted by a power ~- ~o~~~~~
source for lifting the lifting frames. Another power source for rotating the jig i;s mounted on the lifting frame.
In this apparatus, the mechanism for lifting the jig becomes large and a~ driving source for rotating the j ig is required in addition to a driving source for lifting and lowering the jig.
This causes the overall apparatus to become complicated and expensive. While such an apparatus might be suitable for a mass production line, it is not suitable for experimental equipment or for production of a small number of products.
OBJECTS AND SUMMARY OF THE INVENTION
Taking the above problems into consideration, this invention has a first object of providing a simple apparatus which can put a workpiec:e into and take it out of a treatment bath and rotate the workpiece while in the bath.
In case ithe workpiece is transported by a hanger conveyor for successive immersions into a plurality of treatment baths, in order to further simplify the apparatus, it is preferable to hang the workpiece by a hanger so as to be lifted and lowered as well as to be rotated. It is a second object of this invention to provide an apparatus suitable for such a requirement.
In order to solve the first object, first through fourth systems are proposed according to this invention.
The first system is a surface treatment apparatus having a treatment bath for immersing and treating a workpiece therein with the workpiecE: being put into and taken out of the treatment r 2026174 bath by the lifting and lowering thereof and with the workpiece being rotated about a horizontal axial line while in the bath. A
jig for holding the workpiece is suspended by a means for suspending which can be a pair of cables, wire ropes, chains or the like at a pair of suspending points at each end of the j ig, the suspending points being in symmetrical relationship about the horizontal axial line. A pair of hoisting apparatuses are provided. The upper ends of the pair of ropes connected to suspending points on one side at both ends of the j ig are connected to one of the hoisting apparatuses while the upper ends of the pair of ropes connected to suspending points on the other side at both ends of the jig are connected to the other of the hoisting apparatuses.
The second system is a surface treatment apparatus for use with a treatment bath and includes a jig having a pair of jig-rotating wheels comprising sprockets fixed on both ends of the jig with their centers on the same horizontal axial line. The jig is suspended by a means for suspending which includes a pair of chains which are respectively wound around the jig-rotating wheels. A
pair of hoisting apparatuses are provided with one end of each of the chains being connected to one of the hoisting apparatuses and the other end of each of the chains being connected to the other of the hoisting apparatuses.
The third system is a surface treatment apparatus for use with a treatment bath and includes a jig for holding a workpiece having a pair of jig-rotating wheels fixed on the same horizontal axial line at both ends of the jig. The jig is suspended by a means for suspending which includes four wire ropes, with a pair at each end of the jig. The lower ends of each pair are fixed to one of the jig-rotating wheels and are wound therearound in the opposite directions. to each other. A pair of hoisting apparatuses are provided. The four wire ropes are divided into two sets, each set having respectively two ropes of the same winding direction.
The upper ends of two ropes of one set are connected to one of the hoisting apparatuses and the upper ends of two ropes of the other l0 set are connected to the other of the hoisting apparatuses. In this system, the combination of the means for suspending and the jig-rotating wheel may be any of the combinations of wire and pulley, chain and pulley, and chain and sprocket.
The fourth system is a surface treatment apparatus also for use with a treatment bath and includes a jig wherein a pair of shaft extension portions are projectingly provided on the same horizontal axial line at both ends of the jig. A pair of bearing members are externally inserted onto the shaft extension portions and rotatably support the j ig. The j ig is suspended by a means for suspending which can include a pair of wire ropes, chains, cables or the like. The lower ends of the wire ropes are respectively fixed to the bearing members and the upper ends of the wire ropes are connected to one or two hoisting apparatuses. With this structure, the jig' is lifted or lowered by the rotation of the hoisting apparatussa in one direction or in the opposite direction.
A pair of guide frames for guiding the j ig are vertically provided _ . E 2026174 in the treatment bath and are engaged with the shaft extension portions when the j:ig is lowered. A pinion is provided on at least one of the shaft extension portions. A rack is provided in at least one of the guide frames for engaging with the pinion when the guide frames are engaged with the shaft extension portions.
In this system, one hoisting apparatus may be provided for each wire rope but, considering the equipment costs and the like, it is prefE~rable to provide a common single hoisting apparatus to which the pair of wire ropes are connected.
According to the other features of this invention, in order to attain the second object, a supporting frame having guide wheels which guide each of the means for suspending in the above mentioned first through fourth systems is fixed to a hanger of a hanger conveyor, and the hoisting apparatus structure is provided on the hanger.
According to the first system, by rotating the pair of hoisting apparatuses both in the direction of extending or winding up the wire ropes, the jig can be lowered or lifted while .it is maintained in a horizontal posture. If the hoisting apparatuses are rotated in the opposite directions to each other, suspending points located on one side at both ends of the jig are lifted and the suspending points on the other side are lowered. Since the suspending points :Located on one side and the suspending points on the other side .are symmetrically positioned relative to a horizontal axial line, which is the center of rotation, the jig can be rotated 90 degrees from horizontal posture respectively in one ~
2026 i7~, direction as well ass in the other direction about the horizontal axial line.
According to the second system, when the pair of hoisting apparatuses are both rotated in the direction of extending the chains, one end of each chain connected to one of the hoisting apparatuses, and the other end of each chain connected to the other of the hoisting apparatuses are both extended out of the hoisting apparatuses, thus lowering the jig. When the hoisting apparatuses are both rotated in the direction of winding up, both ends of each rope are wound up, thus lifting the jig. When the hoisting apparatuses are rotated in the opposite directions to each other, one of the ends of each rope is extended and the other is wound up.
By this operation, each of the jig-rotating wheels turns and the jig rotates about the horizontal axial line. The third system operates in the same manner.
In the first through third systems, if a pair of hoisting apparatuses are mounted on the hanger, the hanger is stopped right above the treatment: bath and the hoisting apparatuses are rotated in the same direction; in this manner, the workpiece can be put into and taken out of the treatment bath by lowering and lifting the jig on which the workpiece is held. Further, by rotating the hoisting apparatusEa in the opposite directions to each other, the workpiece can be rotated about the horizontal axial line.
In the third system, if the lower end of each rope is fixed to each of the jig-rotating wheels via position adjusting means, the adjustms:nt of the posture of the j ig can be performed by rotating each of the jig-rotating wheels through a small angle.
The jig .is liable to swing in the horizontal direction because it is suspended by flexible means for suspending such as the wire ropes. In the second and third systems, however, the jig is prevented from ;winging during lowering and lifting as well as during the rotating of the jig if paired guide frames to guide the lifting and lowering of the jig are provided in the treatment bath to engage with the: shaft extension portion of each jig-rotating wheel. Furthermore,, a pair of guide members can be suspended from the supporting frame of the hanger, which guide the lifting and lowering of the jig in engagement with the shaft extension portion of each jig-rotating wheel. When the hanger is positioned right above the treatment bath, the lower end of each of the guide members faces the 'upper end of each of the guide frames. In this manner, the shaft extension portion of each of the jig-rotating wheels can be smoothly inserted, when the j ig is lowered, into each of the guide frames via the guide members.
The jig can also be prevented from swinging relative to the hanger during transporting. In order to more firmly position the jig relative t:o the hanger, engaging members for positioning the j ig may be provided which engage with the supporting frame upon lifting of the jig. Further, if guide rails to guide the transporting of the hanger in engagement with the supporting frame are provided, the hanger is prevented from swinging in transporting, thus. securing a stable transporting.
According to the fourth system, the jig is lowered or 202fi 174 lifted by the rotation of the hoisting apparatus in the direction of extending or winding up the wire ropes, guided by the guide frame which is vertically provided in the treatment bath. The workpiece which is held by the jig is therefore put into or taken out of the treatmeni~ bath without swinging. During this operation, the pinion fixed to that shaft extension portion of the jig which is engaged with the guide frame, comes into engagement with the rack which is fixed to the guide frame. In accordance with the lowering or lifting movement of the jig, the shaft extension portion rotates within the bearing member which is supported by the wire rope, thus rotating the jig about the horizontal axial line.
In the fourth system, too, by mounting the hoisting apparatus on the hanger, the jig can be suspended from the hanger in a manner capablE: of lifting, lowering, and rotating.
According to the fourth system, because the jig is rotatably supported by the bearing member on the shaft, there is a possibility of self-rotating of the jig during transporting.
Therefore, it is preferable that engaging members that are the same as those provided on the jig-rotating wheels in the second and third systems, be provided with the engaging members engaging with the supporting frame of the hanger when the jig is lifted, thereby preventing the jig from rotating when lifted.
In each of the first through fourth systems, the means for suspending can be wire rope, cable, chain or the like as suitably selected by a person of skill in the mechanical arts. The various terms of wire rope, cable, and chain are being 2o2s ~~~
interchangeablely used in this specification.
BRIEF DESCRIPTION OF THE DRAWINGS
The above: and other objects and the attendant advantages of the present invention will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
Fig. 1 i;s a sectional side view of one embodiment of a surface treatment <~pparatus of this invention;
Fig. 2 i.s a sectional side view taken along the line II-II of Fig. 1;
Fig. 3 is a sectional side view of an important portion of a second embodiment;
Fig. 4 is a sectional side view taken along the line IV-IV of Fig. 3;
Fig. 5 is an enlarged view of an adjusting means to be provided on a jig-rotating wheel of, the related embodiment of this 'invention;
Fig. 6 i:~ a sectional side view of a third embodiment of this invention;
Fig. 7 is a sectional side view taken along the line VII-VII of Fig. 6;
Fig. 8 is a sectional side view of a fourth embodiment;
and Fig. 9 :is a sectional side view taken along the line IX-IX of Fig. 8.
BACKGROUND OF THE IN'~E TION
This invention relates to an apparatus for surface treating workpieces :>uch as vehicle bodies by immersing them into a treatment bath far performing a surface treatment such as chemical treatment, e~lectrodeposition or the like.
An apparatus of this type is disclosed in Japanese Published Unexamined Patent Application No. 229167/1988. The apparatus includes a jig for holding a vehicle body provided at a treatment station where a treatment bath is placed. The jig can be lifted and lowered and can be pivoted or rotated about a horizontal axial line which extends in the direction of the length of the vehicle body. The vehicle body is transported to the treatment station by a hanger conveyor and is received by the jig. The vehicle body is put into and taken out of the treatment bath by lowering and lifting the jig and is rotated between a horizontal posture and a "lie-on~-side" posture. In this apparatus, by putting the vehicle body into the treatment bath in the "lie-on-side"
posture, the resistance at the time of putting it into and taking it out of the treatment bath is reduced, and the vehicle body is cleared of air traps>ed inside the vehicle body by inverting it after it has been put: into the treatment bath.
In this kind of apparatus, the j ig is rotatably supported between a pair of lifting frames which are provided on both sides of the treatment bath. . The j ig is arranged to be lifted by a power ~- ~o~~~~~
source for lifting the lifting frames. Another power source for rotating the jig i;s mounted on the lifting frame.
In this apparatus, the mechanism for lifting the jig becomes large and a~ driving source for rotating the j ig is required in addition to a driving source for lifting and lowering the jig.
This causes the overall apparatus to become complicated and expensive. While such an apparatus might be suitable for a mass production line, it is not suitable for experimental equipment or for production of a small number of products.
OBJECTS AND SUMMARY OF THE INVENTION
Taking the above problems into consideration, this invention has a first object of providing a simple apparatus which can put a workpiec:e into and take it out of a treatment bath and rotate the workpiece while in the bath.
In case ithe workpiece is transported by a hanger conveyor for successive immersions into a plurality of treatment baths, in order to further simplify the apparatus, it is preferable to hang the workpiece by a hanger so as to be lifted and lowered as well as to be rotated. It is a second object of this invention to provide an apparatus suitable for such a requirement.
In order to solve the first object, first through fourth systems are proposed according to this invention.
The first system is a surface treatment apparatus having a treatment bath for immersing and treating a workpiece therein with the workpiecE: being put into and taken out of the treatment r 2026174 bath by the lifting and lowering thereof and with the workpiece being rotated about a horizontal axial line while in the bath. A
jig for holding the workpiece is suspended by a means for suspending which can be a pair of cables, wire ropes, chains or the like at a pair of suspending points at each end of the j ig, the suspending points being in symmetrical relationship about the horizontal axial line. A pair of hoisting apparatuses are provided. The upper ends of the pair of ropes connected to suspending points on one side at both ends of the j ig are connected to one of the hoisting apparatuses while the upper ends of the pair of ropes connected to suspending points on the other side at both ends of the jig are connected to the other of the hoisting apparatuses.
The second system is a surface treatment apparatus for use with a treatment bath and includes a jig having a pair of jig-rotating wheels comprising sprockets fixed on both ends of the jig with their centers on the same horizontal axial line. The jig is suspended by a means for suspending which includes a pair of chains which are respectively wound around the jig-rotating wheels. A
pair of hoisting apparatuses are provided with one end of each of the chains being connected to one of the hoisting apparatuses and the other end of each of the chains being connected to the other of the hoisting apparatuses.
The third system is a surface treatment apparatus for use with a treatment bath and includes a jig for holding a workpiece having a pair of jig-rotating wheels fixed on the same horizontal axial line at both ends of the jig. The jig is suspended by a means for suspending which includes four wire ropes, with a pair at each end of the jig. The lower ends of each pair are fixed to one of the jig-rotating wheels and are wound therearound in the opposite directions. to each other. A pair of hoisting apparatuses are provided. The four wire ropes are divided into two sets, each set having respectively two ropes of the same winding direction.
The upper ends of two ropes of one set are connected to one of the hoisting apparatuses and the upper ends of two ropes of the other l0 set are connected to the other of the hoisting apparatuses. In this system, the combination of the means for suspending and the jig-rotating wheel may be any of the combinations of wire and pulley, chain and pulley, and chain and sprocket.
The fourth system is a surface treatment apparatus also for use with a treatment bath and includes a jig wherein a pair of shaft extension portions are projectingly provided on the same horizontal axial line at both ends of the jig. A pair of bearing members are externally inserted onto the shaft extension portions and rotatably support the j ig. The j ig is suspended by a means for suspending which can include a pair of wire ropes, chains, cables or the like. The lower ends of the wire ropes are respectively fixed to the bearing members and the upper ends of the wire ropes are connected to one or two hoisting apparatuses. With this structure, the jig' is lifted or lowered by the rotation of the hoisting apparatussa in one direction or in the opposite direction.
A pair of guide frames for guiding the j ig are vertically provided _ . E 2026174 in the treatment bath and are engaged with the shaft extension portions when the j:ig is lowered. A pinion is provided on at least one of the shaft extension portions. A rack is provided in at least one of the guide frames for engaging with the pinion when the guide frames are engaged with the shaft extension portions.
In this system, one hoisting apparatus may be provided for each wire rope but, considering the equipment costs and the like, it is prefE~rable to provide a common single hoisting apparatus to which the pair of wire ropes are connected.
According to the other features of this invention, in order to attain the second object, a supporting frame having guide wheels which guide each of the means for suspending in the above mentioned first through fourth systems is fixed to a hanger of a hanger conveyor, and the hoisting apparatus structure is provided on the hanger.
According to the first system, by rotating the pair of hoisting apparatuses both in the direction of extending or winding up the wire ropes, the jig can be lowered or lifted while .it is maintained in a horizontal posture. If the hoisting apparatuses are rotated in the opposite directions to each other, suspending points located on one side at both ends of the jig are lifted and the suspending points on the other side are lowered. Since the suspending points :Located on one side and the suspending points on the other side .are symmetrically positioned relative to a horizontal axial line, which is the center of rotation, the jig can be rotated 90 degrees from horizontal posture respectively in one ~
2026 i7~, direction as well ass in the other direction about the horizontal axial line.
According to the second system, when the pair of hoisting apparatuses are both rotated in the direction of extending the chains, one end of each chain connected to one of the hoisting apparatuses, and the other end of each chain connected to the other of the hoisting apparatuses are both extended out of the hoisting apparatuses, thus lowering the jig. When the hoisting apparatuses are both rotated in the direction of winding up, both ends of each rope are wound up, thus lifting the jig. When the hoisting apparatuses are rotated in the opposite directions to each other, one of the ends of each rope is extended and the other is wound up.
By this operation, each of the jig-rotating wheels turns and the jig rotates about the horizontal axial line. The third system operates in the same manner.
In the first through third systems, if a pair of hoisting apparatuses are mounted on the hanger, the hanger is stopped right above the treatment: bath and the hoisting apparatuses are rotated in the same direction; in this manner, the workpiece can be put into and taken out of the treatment bath by lowering and lifting the jig on which the workpiece is held. Further, by rotating the hoisting apparatusEa in the opposite directions to each other, the workpiece can be rotated about the horizontal axial line.
In the third system, if the lower end of each rope is fixed to each of the jig-rotating wheels via position adjusting means, the adjustms:nt of the posture of the j ig can be performed by rotating each of the jig-rotating wheels through a small angle.
The jig .is liable to swing in the horizontal direction because it is suspended by flexible means for suspending such as the wire ropes. In the second and third systems, however, the jig is prevented from ;winging during lowering and lifting as well as during the rotating of the jig if paired guide frames to guide the lifting and lowering of the jig are provided in the treatment bath to engage with the: shaft extension portion of each jig-rotating wheel. Furthermore,, a pair of guide members can be suspended from the supporting frame of the hanger, which guide the lifting and lowering of the jig in engagement with the shaft extension portion of each jig-rotating wheel. When the hanger is positioned right above the treatment bath, the lower end of each of the guide members faces the 'upper end of each of the guide frames. In this manner, the shaft extension portion of each of the jig-rotating wheels can be smoothly inserted, when the j ig is lowered, into each of the guide frames via the guide members.
The jig can also be prevented from swinging relative to the hanger during transporting. In order to more firmly position the jig relative t:o the hanger, engaging members for positioning the j ig may be provided which engage with the supporting frame upon lifting of the jig. Further, if guide rails to guide the transporting of the hanger in engagement with the supporting frame are provided, the hanger is prevented from swinging in transporting, thus. securing a stable transporting.
According to the fourth system, the jig is lowered or 202fi 174 lifted by the rotation of the hoisting apparatus in the direction of extending or winding up the wire ropes, guided by the guide frame which is vertically provided in the treatment bath. The workpiece which is held by the jig is therefore put into or taken out of the treatmeni~ bath without swinging. During this operation, the pinion fixed to that shaft extension portion of the jig which is engaged with the guide frame, comes into engagement with the rack which is fixed to the guide frame. In accordance with the lowering or lifting movement of the jig, the shaft extension portion rotates within the bearing member which is supported by the wire rope, thus rotating the jig about the horizontal axial line.
In the fourth system, too, by mounting the hoisting apparatus on the hanger, the jig can be suspended from the hanger in a manner capablE: of lifting, lowering, and rotating.
According to the fourth system, because the jig is rotatably supported by the bearing member on the shaft, there is a possibility of self-rotating of the jig during transporting.
Therefore, it is preferable that engaging members that are the same as those provided on the jig-rotating wheels in the second and third systems, be provided with the engaging members engaging with the supporting frame of the hanger when the jig is lifted, thereby preventing the jig from rotating when lifted.
In each of the first through fourth systems, the means for suspending can be wire rope, cable, chain or the like as suitably selected by a person of skill in the mechanical arts. The various terms of wire rope, cable, and chain are being 2o2s ~~~
interchangeablely used in this specification.
BRIEF DESCRIPTION OF THE DRAWINGS
The above: and other objects and the attendant advantages of the present invention will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
Fig. 1 i;s a sectional side view of one embodiment of a surface treatment <~pparatus of this invention;
Fig. 2 i.s a sectional side view taken along the line II-II of Fig. 1;
Fig. 3 is a sectional side view of an important portion of a second embodiment;
Fig. 4 is a sectional side view taken along the line IV-IV of Fig. 3;
Fig. 5 is an enlarged view of an adjusting means to be provided on a jig-rotating wheel of, the related embodiment of this 'invention;
Fig. 6 i:~ a sectional side view of a third embodiment of this invention;
Fig. 7 is a sectional side view taken along the line VII-VII of Fig. 6;
Fig. 8 is a sectional side view of a fourth embodiment;
and Fig. 9 :is a sectional side view taken along the line IX-IX of Fig. 8.
DETAILED DESCRIPTION ~OF PREFERRED EMBODIMENTS
Referring to the drawings, a treatment bath 1 is provided into which a vehicle body W, i.e., the workpiece, is immersed. A
hanger conveyor 2 crosses an upper space of the treatment bath 1.
The conveyor 2 comprises a hanger 5 which is suspended from a conveyor rail 3 by a plurality of rollers 4, and a driving member 6 (Fig. 2) with an e~Lectric motor 6a for self-propelling the hanger along the conveyor rail 3. The direction of trans-porting the vehicle body is hereinafter referred to as the lateral direction and the direction crossing the former at right angles is referred to as the longitudinal direction.
A longitudinally extending supporting frame 7 is fixedly provided under the hanger 5. A longitudinally extending jig 8 which holds the vehicle body W is suspended from the sup-porting frame 7 by mf~ans for suspending which is shown as a pair of front and rear wire ropes or chains 91, 92.
The jig 8 is provided with a plurality of clamping members 8a which clamp the vehicle body W at suspension mounting holes or the like. Further, a pair of jig-rotating wheels 101, 102 comprising sprockets are fixed on both longitudinal ends of the j ig 8 on the same horizontal axial line. A front rope 91 comprising a chain is wound around the front jig-rotating wheel 101, and a rear rope 92 comprising a chain is wound around the rear jig-rotating wheel 102.
A pair of :Left and right hoisting apparatuses 111, 112 are mounted on the: hanger 5. A pair of left and right i 202617~r sprocket-like guidE~ wheels 121, 122 for the front chain 91 are mounted at the front and intermediate portions of the supporting frame 7. One end of the front chain 91 is connected to the left hoisting apparatus 111 via the left-side guide wheels 121, 122 and the other end of the chain 91 is connected to the right hoisting apparatus 112 via the right-side guide wheels 121, 122. ~A pair of left and right sprocket-like guide wheels 131, 132 for the rear chain 92 are mountEad at the rear and intermediate portions of the supporting frame 7.. One end of the rear chain 92 is connected to l0 the left hoisting apparatus 111 via the left-side guide wheels 131, 132 and the other end of the chain 92 is connected to the right hoisting apparatus 112 via the right-side guide wheels 131, 132.
If both hoisting apparatuses 111, 112 are rotated in the direction of extending or winding up the chains, both ends of both chains 91, 92 are respectively extended or wound up to lower or lift the jig 8 while maintaining it in its horizontal posture. If, on the other hand, the hoisting apparatuses 111, 112 are rotated in the opposite directions to each other, one end of each chain 91, 92 is extended and ths: other end thereof is wound up to rotate the j ig 8 about the horizontal axis via the chains 91. 92.
Each of the jig-rotating wheels 101, 102 is provided, on its external surface, with a shaft extension portion l0a which projects outwards on the axial line, and an engaging member lOb which projects rad:ially outwards. A pair of guide frames 14, 14 of U-shape in horizontal cross section are vertically provided on the front and rear ends of the treatment bath 1 such that each of the i202617~
guide frames 14, 14 engages with the shaft extension portion l0a of the respective jig-rotating wheels 101, 102 to guide the lifting and lowering of the jig 8. The supporting frame 7 is provided, on its front and rear ends, with vertically downwardly extending leg pieces 7a, 7a. When the jig 8 is lifted to its uppermost position, the engaging member lOb on each of the jig-rotating wheels 101, 102 engages with a positioning groove 7b formed in each of the leg pieces 7a so that t:he jig 8 may be positioned in its lateral and longitudinal directions, as well as in its rotational position relative to the hanger 5.
Guide rollers 7c, 7c are provided at the front and rear ends of the supporting frame 7. A pair of longitudinal guide rails are provided in parallel with the conveyor rail 3 and receive each of the guide rollers 7c in order to guide the movement of the 15 hanger 5.
Next, the operation of this embodiment is explained.
After the hanger 5 :is stopped right above the treatment bath 1, the pair of hoisting <~pparatuses 111, 112 are both rotated in the direction of extending the chains 91, 92 until the j ig 8 is lowered down to a position at which the engaging members lOb are released from their engagement with the grooves 7b. Then, one of the hoisting apparatuses 111, 112 is rotated in the winding-up direction with the other kept in the extending direction in order to rotate the vehicle body W 90 degrees to a "lie-on-side" posture.
The hoisting apparatuses 111, 112 are again rotated both in the extending direction in order to lower the jig 8 to a lowermost . ~ 2026 1T4~
position guided by the guide frames 14, 14, thus putting the vehicle body W into the treatment bath 1 in the "lie-on-side"
posture. Thereafter, one of the hoisting apparatuses 111, 112 is rotated in the winding-up direction and the other in the extending direction in order to pivot the j ig 8, 180 degrees in the direction opposite to the above-mentioned direction. The vehicle body W is thus reversed in it:~ posture to the opposite "lie-on-side" posture.
By this reversing, 'the vehicle body W can be cleared of air trapped inside the recesses of the body, so that the entire vehicle body W
may be surface-treated without irregularities.
After thE: treatment, both hoisting apparatuses 111, 112 are rotated in the winding-up direction in order to lift the jig 8 while maintaining t:he vehicle body W in the opposite "lie-on-side"
posture. When the vehicle body W has been taken out of the treatment bath 1, one of the hoisting apparatuses 111, 112 is rotated in the extending direction and the other thereof in the winding-up direction in order to return the vehicle body W to the horizontal posture by rotating the jig 8, 90 degrees. Then, both hoisting apparatuses 111, 112 are again rotated in the winding-up direction to lift the j ig 8 to an uppermost position. The engaging members lOb engage with the grooves 7b to fix the position of the jig 8 relative to the hanger 5. Thereafter, the hanger 5 is transported to the position of the next treatment bath guided by the guide rollers '7c in the guide rails 15.
In the ax>ove-mentioned embodiment, each of the chains 91, 92 is wound around each of the jig-rotating wheels 101, 102 in a U-2o2s ~~4 shape. Another embodiment is shown in Figs. 3 and 4. A pair each of wire ropes 171, 172 are wound in opposite directions around each one of the jig-rcrtatin~ wheels 16 which are fixed at both longitudinal ends of the jig 8 on the same horizontal axial line.
One end of each of the wire ropes 171, 172 is fixed to the jig-rotating wheel 16. The jig 8 is suspended from a hanger as in the first embodiment by a pair of the wire ropes for each jig-rotating wheel 16 (a total of four for the jig 8). In this case, one wire rope 171, wound around one of the jig-rotating wheels 16 as shown in Figs. 3 and 4 anal the corresponding wire rope wound around the other j ig-rotating wheel in the same direction are connected to one of the lifting apparatuses in the same manner as the one end of the pair of chains 91, ~~2 in the first embodiment. The other wire rope 172 wound around the one jig-rotating wheel 16 and the corresponding other wire rope wound around the other jig-rotating wheel in the same direction are connected to the other lifting apparatus in the same manner as the other end of the pair of chains 91, 92 in the first embodiment. In operation, the jig 8 can be lifted and lowered and rotated about a horizontal axis in the same manner as the first. embodiment.
In the second embodiment, guide members 18 of U-shape in horizontal cross s~sction for guiding the lifting and lowering of the jig 8 in engagement with the shaft extension portions 16a of the jig-rotating wheels 16, are suspended from a supporting frame (not shown) of the hanger. Thus, when the hanger is right above the treatment bath, the lower ends of the guide members 18 face the .2026 174 upper ends of the guide frames 14 which are vertically provided in the treatment bath" In lowering the jig 8, the shaft extension portions 16a are smoothly inserted into the guide frames 14 guided by the guide members 18.
A pair of winding grooves 16b are formed in each of the j ig-rotating wheels 16 to prevent the two wire ropes 171, 172 wound therearound from entangling with each other. A pair of brackets 16c, 16c are fixedly provided on the pivotal wheel 16 in symmetrical right and left positions. As shown in Fig. 5, an adjusting bolt 19 is provided on each bracket 16c as a means of adjusting the posture of the jig 8. One end of the means for suspending (shown as a chain) constituting each of the wire ropes 171, 172 is engaged with a cross pin 19a which is laterally provided at a divided portion at a tip of the adjusting bolt 19.
In this manner, by the operation of the adjusting bolt 19, the effective length of the chain is changed thereby adjusting the posture of the jig 8.
In the first embodiment, when wire ropes or chains 91, 92 derail from the j i.g-rotating wheels 101, 102, the j ig 8 will be dropped. However, in the second embodiment, since one end of each wire rope or chain 171, 172 is fixed to the jig-rotating wheel 16, the jig 8 will not be dropped even if the wire ropes 171, 172 were derailed from the 'jig-rotating wheel 16; thus safety is ensured.
Figs. 6 and 7 show a third embodiment. In this embodiment, a pair of right and left suspending rods 8b, 8b are vertically provided at the front and rear ends of the jig 8. The 2p2s174 jig 8 is suspended from the supporting frame 7 of the hanger 5 at these suspending rods 8b via a pair of the right and left wire ropes 201, 202 at eaclh of the front and rear ends. A pair of right and left hoisting apparatuses 111, 112 are mounted on the hanger 5 in the same manner as in the above-mentioned embodiment. The left wire ropes 201, 201, in the front and rear portions are connected to the left lifting apparatus 111, via the left guide wheels 121, 122; 131, 132 which are disposed on the supporting frame 7 in the same manner as in the first embodiment. The right wire ropes 202, 202 in the front and rear portions are connected to the right hoisting apparatus 1:12 via the right guide wheels 121, 122; 131, 132. By rotating both of the lifting apparatuses 111, 112 in the extending direction or in the winding-up direction, the jig 8 can be lowered or lifted while maintaining the jig 8 in a horizontal posture.
The right a.nd left suspension rods 8b, 8b on each end of the jig 8 are disposed such that the suspension points 21, 21 at the upper end of tlhe suspension rods 8b, 8b are symmetrical relative to the hori~:ontal axis 0 which is the center of rotation of the vehicle body W. Thus, if the lifting apparatuses 111, 112 are rotated in the opposite directions to each other, the jig 8 can be rotated 90 degrees respectively in either direction about the axial line 0. According to this embodiment, the vehicle body W can be inverted 180 degrees from one "lie-on-side" posture to the other "lie-on-side" posture:, and the surface treatment of the procedures as in the first embodiment can be performed.
Figs. 8 and 9 show a fourth embodiment. In this embodiment, a pair of shaft extension portions 22, 22 are projectingly provided on both front and rear ends of the jig 8 on the same horizontal axial line. Bearing members 23, 23 are externally inserted into the respective shaft extension portions 22, 22 and rotatabl.y support the jig 8. A pair of front and rear wire ropes 241, 242, one end of each being connected to each of the bearing members 2a, 23, are provided such that the jig 8 is rotatably suspended. about a horizontal axial line by the wire ropes l0 241, 242 via the bearing members 23, 23. A common hoisting apparatus 11 is mounted on the hanger 5. The front wire rope 241 is connected to the hoisting apparatus 11 via pulley-like guide wheels 121, 122 which are provided respectively in the laterally central positions of the front and intermediate portions of the supporting frame 7 at the lower end of the hanger 5. The rear wire rope 242 is connected to the hoisting apparatus 11 via pulley-like guide wheels 131, 132 which are provided respectively in the laterally central positions of the rear and intermediate portions of the supporting frame 7. If the hoisting apparatus 11 is rotated counterclockwise or clockwise as seen in Fig. 8, both of the wire ropes 241, 242 are extended or wound up so that the jig 8 can be lowered or lifted while maintaining its horizontal posture.
Each of i~he shaft extension portions 22 is provided with a disk 25. The disk 25 is provided with an engaging member 26 which extends upwards. Receiving members 27 are provided at the ends of the supporting frame 7 which have formed thereon guide ~~~_ 2026174 grooves 27a for the engaging members 26, the receiving members 27 corresponding to the leg pieces 7a of the first embodiment. When the jig 8 is lifted, the engaging members 26 come into engagement with the guide grooves 27a, so that the jig 8 is prevented from rotating and is longitudinally and laterally positioned relative to the hanger 5. The receiving members 27 are inserted into U-shaped brackets 7d which are provided on the end surfaces of the supporting frame 7. The guide projections 7e provided at the ends of the frame 7 are made to fit into vertically elongate grooves 27b which are formed along the upper internal side surfaces of the receiving members 27, so that the receiving members 27 are free to move for a predetermined downward stroke relative to the supporting frame 7.
In this fourth embodiment, the guide rollers 7c engageable with the guide rails 15 for the hanger of the first embodiment are provided outside the bracket 7d.
Guide frames 14, 14 of U-shape in horizontal cross section are vertically provided, like in the first embodiment, on both front and rear ends of the treatment bath 1. In this fourth embodiment, however, each of the guide frames 14 is formed so as to guide the lifting and lowering of the jig 8 in engagement with each of the shaft exten:~ion portions 22. A pinion 28 is fixed to each of the shaft exten:~ion portions 22. Racks 291, 292 engageable by the pinion 28 are provided on an upper portion of one side and on a lower portion of the other side of each of the guide frames 14.
The upper rack 291 is formed in a length equivalent to one quarter of the circumference of the pinion 28 and the lower rack 292 is formed in a length equivalent to one half of the circumference of the pinion 28.
Next, the: operation of this embodiment is explained.
After the hanger 5 .is first'stopped right above the treatment bath 1, the hoisting apparatus 11 is rotated in the direction of extending the wire ropes 241, 242 in order to lower the jig 8.
During this operation, the receiving member 27 lowers by its own weight to a predetermined position while maintaining the engagement l0 with the engaging member 26. When the shaft extension portion 22 of the j ig 8 is insE:rted into the guide frame 14 , and the pinion 28 starts engaging with the upper rack 291, the engaging member 26 is detached downwards away from the receiving member 27. By the succeeding loweringr of the jig 8, the jig 8 is rotated 90 degrees in the counterclockwise direction in Fig. 9 by the pinion 28. The vehicle body W thus assumes a "lie-on-side" posture and is put into the treatment bath 1 in this condition. Then, the pinion 28 comes into engagement with the lower rack 292. The jig 8 is thus rotated 180 degrees in the clockwise direction with the lowering of the j ig 8. The vehicle body W is consequently inverted into a "lie-on-side" posture which is opposite to the above-mentioned posture, inside thE: treatment bath 1. Then, in the area in which the pinion 28 engages with the rack 292, the jig 8 is appropriately lifted and lowered to repeat the inversion of the vehicle body W.
By this inversion of the vehicle body W, it can be cleared of air trapped in recesses therein, thereby uniformly surface-treating the Z02s ~7 ~
vehicle body W.
After the surface treatment, the jig 8 is lifted to take the vehicle body W out of the treatment bath 1. At this time, the vehicle body W returns to its horizontal posture by the rotation of the jig 8 through i~he engagement of the pinion 28 with the upper rack 291. At the name time, the engaging members 26 engage with the receiving members 27 which are in the lowered position, thereby stopping the jig 8 from rotating. Thereafter, the jig 8 is lifted to the position shown in the figure while pushing up the receiving members 27. The hanger 5 is then transported to the next treatment position.
It may be. so arranged that a hoisting apparatus and a j ig which is suspended therefrom via wire ropes are disposed above a treatment bath, whereby the workpiece is handed over between a hanger and the jig to put the workpiece into or take it out of the treatment bath. However, if the jig 8 is suspended from the hanger 5 as in the above described embodiments, the handing over of the workpiece becomes unnecessary. Therefore, it is possible to increase the efficiency of the work, simplify the equipment, and to cope easily with enlarging the number of the treatment baths.
It is readily apparent that the above-described has the advantage of wide commercial utility. It should be understood that the specific form of the invention hereinabove described is intended to be representative only, as certain modifications within the scope of these teachings will be apparent to those skilled in the art.
._ _ 2o2s~~~
Accordingly, reference should be made to the following claims in determining the full scope of the invention.
Referring to the drawings, a treatment bath 1 is provided into which a vehicle body W, i.e., the workpiece, is immersed. A
hanger conveyor 2 crosses an upper space of the treatment bath 1.
The conveyor 2 comprises a hanger 5 which is suspended from a conveyor rail 3 by a plurality of rollers 4, and a driving member 6 (Fig. 2) with an e~Lectric motor 6a for self-propelling the hanger along the conveyor rail 3. The direction of trans-porting the vehicle body is hereinafter referred to as the lateral direction and the direction crossing the former at right angles is referred to as the longitudinal direction.
A longitudinally extending supporting frame 7 is fixedly provided under the hanger 5. A longitudinally extending jig 8 which holds the vehicle body W is suspended from the sup-porting frame 7 by mf~ans for suspending which is shown as a pair of front and rear wire ropes or chains 91, 92.
The jig 8 is provided with a plurality of clamping members 8a which clamp the vehicle body W at suspension mounting holes or the like. Further, a pair of jig-rotating wheels 101, 102 comprising sprockets are fixed on both longitudinal ends of the j ig 8 on the same horizontal axial line. A front rope 91 comprising a chain is wound around the front jig-rotating wheel 101, and a rear rope 92 comprising a chain is wound around the rear jig-rotating wheel 102.
A pair of :Left and right hoisting apparatuses 111, 112 are mounted on the: hanger 5. A pair of left and right i 202617~r sprocket-like guidE~ wheels 121, 122 for the front chain 91 are mounted at the front and intermediate portions of the supporting frame 7. One end of the front chain 91 is connected to the left hoisting apparatus 111 via the left-side guide wheels 121, 122 and the other end of the chain 91 is connected to the right hoisting apparatus 112 via the right-side guide wheels 121, 122. ~A pair of left and right sprocket-like guide wheels 131, 132 for the rear chain 92 are mountEad at the rear and intermediate portions of the supporting frame 7.. One end of the rear chain 92 is connected to l0 the left hoisting apparatus 111 via the left-side guide wheels 131, 132 and the other end of the chain 92 is connected to the right hoisting apparatus 112 via the right-side guide wheels 131, 132.
If both hoisting apparatuses 111, 112 are rotated in the direction of extending or winding up the chains, both ends of both chains 91, 92 are respectively extended or wound up to lower or lift the jig 8 while maintaining it in its horizontal posture. If, on the other hand, the hoisting apparatuses 111, 112 are rotated in the opposite directions to each other, one end of each chain 91, 92 is extended and ths: other end thereof is wound up to rotate the j ig 8 about the horizontal axis via the chains 91. 92.
Each of the jig-rotating wheels 101, 102 is provided, on its external surface, with a shaft extension portion l0a which projects outwards on the axial line, and an engaging member lOb which projects rad:ially outwards. A pair of guide frames 14, 14 of U-shape in horizontal cross section are vertically provided on the front and rear ends of the treatment bath 1 such that each of the i202617~
guide frames 14, 14 engages with the shaft extension portion l0a of the respective jig-rotating wheels 101, 102 to guide the lifting and lowering of the jig 8. The supporting frame 7 is provided, on its front and rear ends, with vertically downwardly extending leg pieces 7a, 7a. When the jig 8 is lifted to its uppermost position, the engaging member lOb on each of the jig-rotating wheels 101, 102 engages with a positioning groove 7b formed in each of the leg pieces 7a so that t:he jig 8 may be positioned in its lateral and longitudinal directions, as well as in its rotational position relative to the hanger 5.
Guide rollers 7c, 7c are provided at the front and rear ends of the supporting frame 7. A pair of longitudinal guide rails are provided in parallel with the conveyor rail 3 and receive each of the guide rollers 7c in order to guide the movement of the 15 hanger 5.
Next, the operation of this embodiment is explained.
After the hanger 5 :is stopped right above the treatment bath 1, the pair of hoisting <~pparatuses 111, 112 are both rotated in the direction of extending the chains 91, 92 until the j ig 8 is lowered down to a position at which the engaging members lOb are released from their engagement with the grooves 7b. Then, one of the hoisting apparatuses 111, 112 is rotated in the winding-up direction with the other kept in the extending direction in order to rotate the vehicle body W 90 degrees to a "lie-on-side" posture.
The hoisting apparatuses 111, 112 are again rotated both in the extending direction in order to lower the jig 8 to a lowermost . ~ 2026 1T4~
position guided by the guide frames 14, 14, thus putting the vehicle body W into the treatment bath 1 in the "lie-on-side"
posture. Thereafter, one of the hoisting apparatuses 111, 112 is rotated in the winding-up direction and the other in the extending direction in order to pivot the j ig 8, 180 degrees in the direction opposite to the above-mentioned direction. The vehicle body W is thus reversed in it:~ posture to the opposite "lie-on-side" posture.
By this reversing, 'the vehicle body W can be cleared of air trapped inside the recesses of the body, so that the entire vehicle body W
may be surface-treated without irregularities.
After thE: treatment, both hoisting apparatuses 111, 112 are rotated in the winding-up direction in order to lift the jig 8 while maintaining t:he vehicle body W in the opposite "lie-on-side"
posture. When the vehicle body W has been taken out of the treatment bath 1, one of the hoisting apparatuses 111, 112 is rotated in the extending direction and the other thereof in the winding-up direction in order to return the vehicle body W to the horizontal posture by rotating the jig 8, 90 degrees. Then, both hoisting apparatuses 111, 112 are again rotated in the winding-up direction to lift the j ig 8 to an uppermost position. The engaging members lOb engage with the grooves 7b to fix the position of the jig 8 relative to the hanger 5. Thereafter, the hanger 5 is transported to the position of the next treatment bath guided by the guide rollers '7c in the guide rails 15.
In the ax>ove-mentioned embodiment, each of the chains 91, 92 is wound around each of the jig-rotating wheels 101, 102 in a U-2o2s ~~4 shape. Another embodiment is shown in Figs. 3 and 4. A pair each of wire ropes 171, 172 are wound in opposite directions around each one of the jig-rcrtatin~ wheels 16 which are fixed at both longitudinal ends of the jig 8 on the same horizontal axial line.
One end of each of the wire ropes 171, 172 is fixed to the jig-rotating wheel 16. The jig 8 is suspended from a hanger as in the first embodiment by a pair of the wire ropes for each jig-rotating wheel 16 (a total of four for the jig 8). In this case, one wire rope 171, wound around one of the jig-rotating wheels 16 as shown in Figs. 3 and 4 anal the corresponding wire rope wound around the other j ig-rotating wheel in the same direction are connected to one of the lifting apparatuses in the same manner as the one end of the pair of chains 91, ~~2 in the first embodiment. The other wire rope 172 wound around the one jig-rotating wheel 16 and the corresponding other wire rope wound around the other jig-rotating wheel in the same direction are connected to the other lifting apparatus in the same manner as the other end of the pair of chains 91, 92 in the first embodiment. In operation, the jig 8 can be lifted and lowered and rotated about a horizontal axis in the same manner as the first. embodiment.
In the second embodiment, guide members 18 of U-shape in horizontal cross s~sction for guiding the lifting and lowering of the jig 8 in engagement with the shaft extension portions 16a of the jig-rotating wheels 16, are suspended from a supporting frame (not shown) of the hanger. Thus, when the hanger is right above the treatment bath, the lower ends of the guide members 18 face the .2026 174 upper ends of the guide frames 14 which are vertically provided in the treatment bath" In lowering the jig 8, the shaft extension portions 16a are smoothly inserted into the guide frames 14 guided by the guide members 18.
A pair of winding grooves 16b are formed in each of the j ig-rotating wheels 16 to prevent the two wire ropes 171, 172 wound therearound from entangling with each other. A pair of brackets 16c, 16c are fixedly provided on the pivotal wheel 16 in symmetrical right and left positions. As shown in Fig. 5, an adjusting bolt 19 is provided on each bracket 16c as a means of adjusting the posture of the jig 8. One end of the means for suspending (shown as a chain) constituting each of the wire ropes 171, 172 is engaged with a cross pin 19a which is laterally provided at a divided portion at a tip of the adjusting bolt 19.
In this manner, by the operation of the adjusting bolt 19, the effective length of the chain is changed thereby adjusting the posture of the jig 8.
In the first embodiment, when wire ropes or chains 91, 92 derail from the j i.g-rotating wheels 101, 102, the j ig 8 will be dropped. However, in the second embodiment, since one end of each wire rope or chain 171, 172 is fixed to the jig-rotating wheel 16, the jig 8 will not be dropped even if the wire ropes 171, 172 were derailed from the 'jig-rotating wheel 16; thus safety is ensured.
Figs. 6 and 7 show a third embodiment. In this embodiment, a pair of right and left suspending rods 8b, 8b are vertically provided at the front and rear ends of the jig 8. The 2p2s174 jig 8 is suspended from the supporting frame 7 of the hanger 5 at these suspending rods 8b via a pair of the right and left wire ropes 201, 202 at eaclh of the front and rear ends. A pair of right and left hoisting apparatuses 111, 112 are mounted on the hanger 5 in the same manner as in the above-mentioned embodiment. The left wire ropes 201, 201, in the front and rear portions are connected to the left lifting apparatus 111, via the left guide wheels 121, 122; 131, 132 which are disposed on the supporting frame 7 in the same manner as in the first embodiment. The right wire ropes 202, 202 in the front and rear portions are connected to the right hoisting apparatus 1:12 via the right guide wheels 121, 122; 131, 132. By rotating both of the lifting apparatuses 111, 112 in the extending direction or in the winding-up direction, the jig 8 can be lowered or lifted while maintaining the jig 8 in a horizontal posture.
The right a.nd left suspension rods 8b, 8b on each end of the jig 8 are disposed such that the suspension points 21, 21 at the upper end of tlhe suspension rods 8b, 8b are symmetrical relative to the hori~:ontal axis 0 which is the center of rotation of the vehicle body W. Thus, if the lifting apparatuses 111, 112 are rotated in the opposite directions to each other, the jig 8 can be rotated 90 degrees respectively in either direction about the axial line 0. According to this embodiment, the vehicle body W can be inverted 180 degrees from one "lie-on-side" posture to the other "lie-on-side" posture:, and the surface treatment of the procedures as in the first embodiment can be performed.
Figs. 8 and 9 show a fourth embodiment. In this embodiment, a pair of shaft extension portions 22, 22 are projectingly provided on both front and rear ends of the jig 8 on the same horizontal axial line. Bearing members 23, 23 are externally inserted into the respective shaft extension portions 22, 22 and rotatabl.y support the jig 8. A pair of front and rear wire ropes 241, 242, one end of each being connected to each of the bearing members 2a, 23, are provided such that the jig 8 is rotatably suspended. about a horizontal axial line by the wire ropes l0 241, 242 via the bearing members 23, 23. A common hoisting apparatus 11 is mounted on the hanger 5. The front wire rope 241 is connected to the hoisting apparatus 11 via pulley-like guide wheels 121, 122 which are provided respectively in the laterally central positions of the front and intermediate portions of the supporting frame 7 at the lower end of the hanger 5. The rear wire rope 242 is connected to the hoisting apparatus 11 via pulley-like guide wheels 131, 132 which are provided respectively in the laterally central positions of the rear and intermediate portions of the supporting frame 7. If the hoisting apparatus 11 is rotated counterclockwise or clockwise as seen in Fig. 8, both of the wire ropes 241, 242 are extended or wound up so that the jig 8 can be lowered or lifted while maintaining its horizontal posture.
Each of i~he shaft extension portions 22 is provided with a disk 25. The disk 25 is provided with an engaging member 26 which extends upwards. Receiving members 27 are provided at the ends of the supporting frame 7 which have formed thereon guide ~~~_ 2026174 grooves 27a for the engaging members 26, the receiving members 27 corresponding to the leg pieces 7a of the first embodiment. When the jig 8 is lifted, the engaging members 26 come into engagement with the guide grooves 27a, so that the jig 8 is prevented from rotating and is longitudinally and laterally positioned relative to the hanger 5. The receiving members 27 are inserted into U-shaped brackets 7d which are provided on the end surfaces of the supporting frame 7. The guide projections 7e provided at the ends of the frame 7 are made to fit into vertically elongate grooves 27b which are formed along the upper internal side surfaces of the receiving members 27, so that the receiving members 27 are free to move for a predetermined downward stroke relative to the supporting frame 7.
In this fourth embodiment, the guide rollers 7c engageable with the guide rails 15 for the hanger of the first embodiment are provided outside the bracket 7d.
Guide frames 14, 14 of U-shape in horizontal cross section are vertically provided, like in the first embodiment, on both front and rear ends of the treatment bath 1. In this fourth embodiment, however, each of the guide frames 14 is formed so as to guide the lifting and lowering of the jig 8 in engagement with each of the shaft exten:~ion portions 22. A pinion 28 is fixed to each of the shaft exten:~ion portions 22. Racks 291, 292 engageable by the pinion 28 are provided on an upper portion of one side and on a lower portion of the other side of each of the guide frames 14.
The upper rack 291 is formed in a length equivalent to one quarter of the circumference of the pinion 28 and the lower rack 292 is formed in a length equivalent to one half of the circumference of the pinion 28.
Next, the: operation of this embodiment is explained.
After the hanger 5 .is first'stopped right above the treatment bath 1, the hoisting apparatus 11 is rotated in the direction of extending the wire ropes 241, 242 in order to lower the jig 8.
During this operation, the receiving member 27 lowers by its own weight to a predetermined position while maintaining the engagement l0 with the engaging member 26. When the shaft extension portion 22 of the j ig 8 is insE:rted into the guide frame 14 , and the pinion 28 starts engaging with the upper rack 291, the engaging member 26 is detached downwards away from the receiving member 27. By the succeeding loweringr of the jig 8, the jig 8 is rotated 90 degrees in the counterclockwise direction in Fig. 9 by the pinion 28. The vehicle body W thus assumes a "lie-on-side" posture and is put into the treatment bath 1 in this condition. Then, the pinion 28 comes into engagement with the lower rack 292. The jig 8 is thus rotated 180 degrees in the clockwise direction with the lowering of the j ig 8. The vehicle body W is consequently inverted into a "lie-on-side" posture which is opposite to the above-mentioned posture, inside thE: treatment bath 1. Then, in the area in which the pinion 28 engages with the rack 292, the jig 8 is appropriately lifted and lowered to repeat the inversion of the vehicle body W.
By this inversion of the vehicle body W, it can be cleared of air trapped in recesses therein, thereby uniformly surface-treating the Z02s ~7 ~
vehicle body W.
After the surface treatment, the jig 8 is lifted to take the vehicle body W out of the treatment bath 1. At this time, the vehicle body W returns to its horizontal posture by the rotation of the jig 8 through i~he engagement of the pinion 28 with the upper rack 291. At the name time, the engaging members 26 engage with the receiving members 27 which are in the lowered position, thereby stopping the jig 8 from rotating. Thereafter, the jig 8 is lifted to the position shown in the figure while pushing up the receiving members 27. The hanger 5 is then transported to the next treatment position.
It may be. so arranged that a hoisting apparatus and a j ig which is suspended therefrom via wire ropes are disposed above a treatment bath, whereby the workpiece is handed over between a hanger and the jig to put the workpiece into or take it out of the treatment bath. However, if the jig 8 is suspended from the hanger 5 as in the above described embodiments, the handing over of the workpiece becomes unnecessary. Therefore, it is possible to increase the efficiency of the work, simplify the equipment, and to cope easily with enlarging the number of the treatment baths.
It is readily apparent that the above-described has the advantage of wide commercial utility. It should be understood that the specific form of the invention hereinabove described is intended to be representative only, as certain modifications within the scope of these teachings will be apparent to those skilled in the art.
._ _ 2o2s~~~
Accordingly, reference should be made to the following claims in determining the full scope of the invention.
Claims (14)
1. A surface treatment apparatus having a treatment bath for immersing and treating a workpiece therein, with the workpiece being put into and taken out of said treatment bath by the lifting and lowering thereof and with the workpiece being rotatable about a horizontal axial line while in the bath, the apparatus comprising:
a jig which holds the workpiece, said jig having one end and the other end in a direction of said horizontal axial line;
a pair of jig-rotating wheels fixed on the same horizontal axial line at both said ends of said jig;
two suspending members for suspending said jig, respectively wound around said jig-rotating wheels;
a pair of hoisting apparatuses; and wherein one end of each of said suspending members is connected to one of said hoisting apparatuses, and the other end of each of said suspending members is connected to the other of said hoisting apparatuses.
a jig which holds the workpiece, said jig having one end and the other end in a direction of said horizontal axial line;
a pair of jig-rotating wheels fixed on the same horizontal axial line at both said ends of said jig;
two suspending members for suspending said jig, respectively wound around said jig-rotating wheels;
a pair of hoisting apparatuses; and wherein one end of each of said suspending members is connected to one of said hoisting apparatuses, and the other end of each of said suspending members is connected to the other of said hoisting apparatuses.
2. A surface treatment apparatus according to claim 1, wherein each of said jig-rotating wheels has a shaft extension portion extending axially along said horizontal axial line, and said apparatus further comprises a pair of guide frames vertically provided in said treatment bath, said guide frames guiding the lifting and lowering of said jig in engagement with said shaft extension portions.
3. A surface treatment apparatus according to claim 1, further comprising a hanger conveyor for transporting the workpiece, a ranger on said hanger conveyor, and a supporting frame having guide wheels for guiding each of said suspending members fixed to said hanger of said conveyor, and wherein both of said hoisting apparatuses are mounted on said hanger.
4. A surface treatment apparatus according to claim 3, further comprising engaging members for positioning said jig which engage with said supporting frame upon lifting of said jig, said engaging members being provided on each of said jig-rotating wheels.
5. A surface treatment apparatus according to claim 3 or 4, further comprising guide rails in engagement with said supporting frame for guiding the movement of said hanger.
6. A surface treatment apparatus according to claim 3, 4 or 5, wherein each of said jig-rotating wheels has a shaft extension portion extending axially along said horizontal axial line, and said apparatus further comprises a pair of guide members vertically downwardly provided on said supporting frame, said guide members guiding said jig in engagement with said shaft extension portion of each of said jig-rotating wheels, a pair of guide frames vertically provided in said treatment bath such that, when said hanger is positioned right above said treatment bath, a lower end of each of said guide members faces an upper end of each of said guide frames, said guide frames guiding the lifting and lowering of said jig in engagement with said shaft extension portion of each of said jig-rotating wheels.
7. A surface treatment apparatus as claimed in any one of claims 1 to 6, wherein said suspending members comprise chains and said jig-rotating wheels are sprockets.
8. A surface treatment apparatus having a treatment bath for immersing and treating a workpiece therein, with the workpiece being put into and taken out of said treatment bath by the lifting and lowering thereof and with the workpiece being rotatable about a horizontal axial line while in the bath, the apparatus comprising:
a jig which holds the workpiece, said jig having one end and the other end in a direction of said horizontal axial line;
a pair of jig-rotating wheels fixed on the same horizontal axial line at both said ends of said jig;
four suspending members for suspending said jig paired at each of said ends of said jig, lower ends of each pair of said suspending members being fixed to each of said jig-rotating wheels by winding therearound in the opposite directions to each other; and a pair of hoisting apparatuses;
wherein said four suspending members are divided into two sets having respectively two suspending members of the same winding direction, upper ends of two suspending members of one set being connected. to one of said hoisting apparatuses, and upper ends of two suspending members of the other set being connected to the other of said hoisting apparatuses.
a jig which holds the workpiece, said jig having one end and the other end in a direction of said horizontal axial line;
a pair of jig-rotating wheels fixed on the same horizontal axial line at both said ends of said jig;
four suspending members for suspending said jig paired at each of said ends of said jig, lower ends of each pair of said suspending members being fixed to each of said jig-rotating wheels by winding therearound in the opposite directions to each other; and a pair of hoisting apparatuses;
wherein said four suspending members are divided into two sets having respectively two suspending members of the same winding direction, upper ends of two suspending members of one set being connected. to one of said hoisting apparatuses, and upper ends of two suspending members of the other set being connected to the other of said hoisting apparatuses.
9. A surface treatment apparatus according to claim 8, wherein each of said jig-rotating wheels has a shaft extension portion extending axially along said horizontal axial line, and said apparatus further comprises a pair of guide frames vertically provided in said treatment bath, said guide frames guiding the lifting and lowering of said jig in engagement with said shaft extension portions.
10. A surface treatment apparatus according to claim 8, further comprising a hanger conveyor for transporting the workpiece; a hanger on said hanger conveyor, and a supporting frame having guide wheels for guiding each of said suspending members fixed to said hanger of said conveyor; and wherein both of said hoisting apparatuses are mounted on said hanger.
11. A surface treatment apparatus according to claim 10, further comprising engaging members for positioning said jig which engage with said supporting frame upon lifting of said jig provided on each of said jig-rotating wheels.
12. A surface treatment apparatus according to claim 10, wherein each of said jig-rotating wheels has a shaft extension portion extending axially along said horizontal axial line, and said apparatus further comprises a pair of guide members vertically downwardly provided on said supporting frame, said guide members guiding said jig in engagement with said sha ft extension portion of each of said jig-rotating wheels, a pair of guide frames vertically provided in said treatment bath such that, when said hanger is positioned right.above said treatment bath, a lower end of each of said guide members faces an upper end of each of said guide frames, said guide frames guiding the lifting and lowering of said jig in engagement with said shaft extension portion of each of said jig-rotating wheels.
13. A surface treatment apparatus according to claim 10, 11 or 12, further comprising guide rails for guiding the movement of said hanger in engagement with said supporting frame.
14. A surface treatment apparatus according to any one of claims 8 to 13, wherein the lower end of each of said suspending members is fixed to each of said jig-rotating wheels via position adjusting means.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248169/1989 | 1989-09-26 | ||
| JP24816989 | 1989-09-26 | ||
| JP15167990A JP2906077B2 (en) | 1989-09-26 | 1990-06-12 | Surface treatment equipment |
| JP6127990U JPH0421559U (en) | 1990-06-12 | 1990-06-12 | |
| JP151679/1990 | 1990-06-12 | ||
| JP61279/1990 | 1990-06-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2026174A1 CA2026174A1 (en) | 1991-03-27 |
| CA2026174C true CA2026174C (en) | 2000-01-18 |
Family
ID=27297450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002026174A Expired - Fee Related CA2026174C (en) | 1989-09-26 | 1990-09-25 | Surface treatment apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US5433783A (en) |
| CA (1) | CA2026174C (en) |
| GB (1) | GB2236734B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972112A (en) | 1997-10-03 | 1999-10-26 | Acco Systems, Inc. | Dip tank workpiece carrier with rocking frame |
| US5989401A (en) * | 1998-07-01 | 1999-11-23 | Chrysler Corporation | Expandable vertical dip pretreatment and electro-deposition system |
| DE10063448C5 (en) * | 2000-12-20 | 2009-02-12 | Eisenmann Anlagenbau Gmbh & Co. Kg | Plant for the treatment, in particular for painting, of objects, in particular vehicle bodies |
| DE10121053A1 (en) * | 2001-04-28 | 2002-10-31 | Duerr Systems Gmbh | Conveying device for conveying workpieces through a treatment area for surface treatment of the workpieces |
| US6712230B2 (en) * | 2001-11-07 | 2004-03-30 | Transportes Continuos Interiores, S.A. | Perfected device to transport vehicles in assembly lines |
| DE10161086B4 (en) * | 2001-12-12 | 2005-06-02 | Wmv Apparatebau Gmbh & Co Kg | Plant for treating mass parts |
| CA2413590C (en) * | 2002-11-27 | 2006-10-10 | Transportes Continuos Interiores, S.A. | Pantographic device for conveying loads in vehicle assembly lines |
| EP1506930B1 (en) * | 2003-08-13 | 2007-10-03 | Taikisha, Ltd. | Conveyance method and apparatus |
| CN1304645C (en) * | 2003-12-04 | 2007-03-14 | 宝龙自动机械（深圳）有限公司 | Double guide rail transmission device |
| ITMI20071705A1 (en) * | 2007-08-30 | 2009-02-28 | Geico Spa | AUTOMATIC PLANT FOR THE DIVING TREATMENT OF BODIES OF VEHICLES WITH NO MECHANICAL CONNECTIONS FOR THE SYNCHRONIZATION OF THE ELEVATORS. |
| BRPI0821810B1 (en) * | 2007-12-28 | 2018-10-09 | Eisenmann Ag | dipping treatment plant |
| DE102008010400A1 (en) * | 2008-02-21 | 2009-10-29 | Eisenmann Anlagenbau Gmbh & Co. Kg | Monorail system and dip treatment plant with such |
| DE102008010401A1 (en) | 2008-02-21 | 2009-10-01 | Eisenmann Anlagenbau Gmbh & Co. Kg | Monorail system and dip treatment plant with such |
| DE102011082798A1 (en) * | 2011-09-15 | 2013-03-21 | Dürr Systems GmbH | Conveying device and method for conveying workpieces through a treatment area |
| US9016464B2 (en) | 2012-04-04 | 2015-04-28 | Sst Systems, Inc. | Tilting multiplier |
| CA2966502A1 (en) * | 2014-12-23 | 2016-06-30 | Geico Spa | Plant for immersion of bodyworks |
| US10427740B2 (en) * | 2015-10-21 | 2019-10-01 | Honda Motor Co., Ltd. | Split outer side panel jig and system |
| PL3452391T3 (en) * | 2016-05-06 | 2024-07-01 | Comau Llc | Inverted carrier lift device system |
| CN109423683B (en) * | 2017-08-30 | 2021-03-23 | 广东新会中集特种运输设备有限公司 | Container coating system and container coating method |
| US10604860B2 (en) * | 2017-12-01 | 2020-03-31 | Ford Motor Company | Alternative E-coat dipping process |
| US11072501B2 (en) * | 2019-06-27 | 2021-07-27 | Sst Systems, Inc. | Finishing system and method of operating |
| US11420853B2 (en) | 2019-10-03 | 2022-08-23 | Comau Llc | Assembly material logistics system and methods |
| MX2022014615A (en) | 2020-06-08 | 2023-01-04 | Comau Llc | Assembly material logistics system and methods. |
| CN115466934B (en) * | 2022-09-09 | 2023-12-22 | 深圳奥拦科技有限责任公司 | Fixed clamp and feeding method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480102A (en) * | 1944-01-06 | |||
| DE1137539B (en) * | 1958-03-13 | 1962-10-04 | Wagner & Co Werkzeugmaschinenf | Turning and transport device for handling long workpieces, especially when processing on straightening and bending presses |
| US3105776A (en) * | 1959-07-01 | 1963-10-01 | Weyhmueller Hermann | Apparatus for waxing beaker-like containers |
| DE1257674B (en) * | 1961-09-29 | 1967-12-28 | Almco Supersheen Division Of G | Transport device for treatment baths |
| GB1260092A (en) * | 1969-02-26 | 1972-01-12 | Olivetti & Co Spa | Carriage for carrying and vertically moving tumbling drums, etc. reltive to a treatment or processing line |
| GB1395383A (en) * | 1972-08-31 | 1975-05-29 | Carrier Drysys Ltd | Treating metallic bodies |
| SE402131B (en) * | 1977-01-21 | 1978-06-19 | Uddeholms Ab | DEGRATOR |
| US4772374A (en) * | 1983-11-14 | 1988-09-20 | Prime-Coat Technology, Inc. | Electrodeposition system and method therefor |
| CA1237382A (en) * | 1983-11-14 | 1988-05-31 | Thomas N. Urquhart | Electrodeposition system and method therefor |
| US4560592A (en) * | 1985-03-06 | 1985-12-24 | Thermo King Corporation | Method of and apparatus for dip coating |
| JPH0815582B2 (en) * | 1987-02-28 | 1996-02-21 | 本田技研工業株式会社 | Body surface treatment method |
| US5110440A (en) * | 1988-02-16 | 1992-05-05 | Elcoat Systems, Inc. | Roll immersion system |
-
1990
- 1990-09-25 CA CA002026174A patent/CA2026174C/en not_active Expired - Fee Related
- 1990-09-26 GB GB9020942A patent/GB2236734B/en not_active Expired - Fee Related
-
1993
- 1993-04-01 US US08/041,342 patent/US5433783A/en not_active Expired - Fee Related
-
1994
- 1994-12-06 US US08/354,040 patent/US5531830A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2236734A (en) | 1991-04-17 |
| GB2236734B (en) | 1993-06-16 |
| US5531830A (en) | 1996-07-02 |
| GB9020942D0 (en) | 1990-11-07 |
| US5433783A (en) | 1995-07-18 |
| CA2026174A1 (en) | 1991-03-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |